/******************************************************* 题目: 统计难题 (hdu 1251) 链接: http://acm.hdu.edu.cn/showproblem.php?pid=1251 算法: 字典树 提示: 这题压要用c++提交,G++会超内存 *******************************************************/ #include<cstdio> #include<cstr…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=5687 2016百度之星资格赛C题,直接套用字典树,顺便巩固了一下自己对字典树的理解 #include<stdio.h> #include<string.h> struct node{ ]; int cnt; void init(){ cnt = ;//计数 memset(next,-,sizeof(next)); } }; ]; ;//记录节点数 void insert(char *s){…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=5384 用字典树.AC自动机两种做法都可以做 #include<stdio.h> #include<string.h> #include<string> #include<iostream> using namespace std; struct node{ int cnt; node *next[]; node(){ cnt = ; ;i<;i++) next…

Intelligent IME Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4776    Accepted Submission(s): 2227 Problem Description We all use cell phone today. And we must be familiar with the intelligen…

Xor Sum Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 132768/132768 K (Java/Others) Total Submission(s): 1555    Accepted Submission(s): 657 Problem Description Zeus 和 Prometheus 做了一个游戏,Prometheus 给 Zeus 一个集合,集合中包含了N个正整数,随后 Prometheus 将向 Ze…

Tree Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=4757 Description Zero and One are good friends who always have fun with each other. This time, they decide to do something on a tree which is a kind of graph…

Chip Factory Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5536 Description John is a manager of a CPU chip factory, the factory produces lots of chips everyday. To manage large amounts of products, every proc…

将斐波那契的前100000个,每个的前40位都插入到字典树里(其他位数删掉),然后直接查询字典树就行. 此题坑点在于 1.字典树的深度不能太大,事实上,超过40在hdu就会MLE…… 2.若大数加法时,保存的位数过少,就会导致低位误差,累积起来就可能导致前40位产生错误,解决办法是提高精度. #include<iostream> #include<cstring> #include<string> #include<cstdio> using namespa…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1247 Problem DescriptionA hat’s word is a word in the dictionary that is the concatenation of exactly two other words in the dictionary.You are to find all the hat’s words in a dictionary. InputStandard…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2072 Problem Descriptionlily的好朋友xiaoou333最近很空,他想了一件没有什么意义的事情,就是统计一篇文章里不同单词的总数.下面你的任务是帮助xiaoou333解决这个问题. Input有多组数据,每组一行,每组就是一篇小文章.每篇小文章都是由小写字母和空格组成,没有标点符号,遇到#时表示输入结束. Output每组只输出一个整数,其单独成行,该整数代表一篇文章里不同单词…